During the late 1930s, the Union Pacific often used helpers to move trains from Ogden to Wasatch. The UP wanted to simplify this move so they asked their "Department of Research and Mechanical Standards" (DoRMS) to design a locomotive that could pull a 3600 ton train unassisted over the 1.14% grade of the Wasatch.
The designers determined that to pull a 3600 ton train, a tractive effort of 135,000 lbs would be needed. Assuming a factor of adhesion of 4.0, the weight on drivers would have to be more…
The Shay locomotive was the most widely used geared steam locomotive. The locomotives were built to the patents of Ephraim Shay, who has been credited with the popularization of the concept of a geared steam locomotive.
Shay locomotives had regular fire-tube boilers offset to the left to provide space for, and counterbalance the weight of, a two or three cylinder "motor," mounted vertically on the right with longitudinal drive shafts extending fore and aft from the crankshaft at wheel axle more…
Prime mover #1: Mikado. Prime mover #2: 2-8-0 Consolidation. Prime Mover #3: 2-8-2. Prime mover #4: 4-8-2
Cab Forwards were designed to keep the crews from getting asfixiated from smoke while long tunnels. While a few other railroads considered purchasing the design, only the Southern Pacific Railroad ever bought any. Many wheel arrangements were used but most of them were of the 4-8-8-2 design.
Many Cab Forwards also contained a Seperate Air Horn. This Sound Profile also contains the ability to play this horn sound using Function 12. (remappable if desired)
AC-6 through AC-12 Cab Forwards Used more…
EMD 645 8 Cyl.
First introduced in 1965, the EMD 645 series is still in production on a by-request basis. It is one of the most popular locomotive prime movers ever produced.
This is used in many prototypes including:
SW1000, and SW1001. It can al be found in V/Line P class, Victorian Railways T class (3rd series) / H class, CIE 201 Class (rebuilt)
As with all Select decoders there are also 16 separate horns, 2 separate brake squeals, and 2 bells include on this one sound profile! All more…
Baldwin VO-6 Prime Movers were used in in only one locomotive.
Baldwin's 142 VO-660s.
Though not quite correct the VO-6 Prime mover is very similar to the sound of the V0-8 Prime mover.
This would be correct for the very popular VO-1000
As with all Select decoders there are also 16 separate horns, 2 separate brake squeals, and 2 bells include on this one sound profile! All changeable using CV48